摘要
采用水稻秸秆为生物质原料,以氮气为保护气,以熔融碱为介质,在自行设计的热裂解反应器内进行快速热裂解制备富氢气体。考察了熔融NaOH、熔融KOH和不同比例的NaOH-KOH复合熔盐对水稻秸秆热裂解的产物分布、气体产物产率和组成含量的影响。结果表明:相比之下,熔融KOH更有利于提高水稻秸秆热裂解气体产物中氢气含量。在1.013×105Pa、450℃和100 L/h的反应条件下,熔融KOH裂解水稻秸秆获得的气体产物中φ(H2)达到87.4%,每1 g生物质H2的产率达到0.7 L。
Pyrolysis of rice straw in molten alkali to produce hydrogen rich gas has been studied in a self designed reactor.The effects of molten NaOH,molten KOH and molten KOH-NaOH with different K/Na ratio,on products distribution,gas product yield and H2 content in gas have been investigated.The results show that molten KOH is more favorable than molten NaOH to increase H2 content in gas product.87.4% H2 content in gas product and H2 yield of 0.7 L/g-biomass have been reached for pyrolysis of rice straw in molten KOH under atmospheric pressure,450 ℃ and 100 L/h of N2 flow rate.
出处
《化学工业与工程》
CAS
2013年第4期1-5,共5页
Chemical Industry and Engineering
基金
国家自然科学基金资助项目(20906084)
关键词
熔融碱
生物质
热裂解
富氢气体
molten alkali
biomass
pyrolysis
hydrogen rich gas
